Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens further satisfies specific conditions.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to a camera optical lens suitable for handheld devices such as smart phones and digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but the photosensitive devices of general camera lens are no other than Charge Coupled Device (CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices shrink, coupled with the current development trend of electronic products being that their functions should be better and their shape should be thin and small, miniature camera lens with good imaging quality therefor has become a mainstream in the market. In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. And, with the development of technology and the increase of the diverse demands of users, and under this circumstances that the pixel area of photosensitive devices is shrinking steadily and the requirement of the system for the imaging quality is improving constantly, the five-piece, six-piece and seven-piece lens structure gradually appear in lens design. There is an urgent need for ultra-thin wide-angle camera lenses which have good optical characteristics and the chromatic aberration of which is fully corrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood with reference to the following drawings. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordance with a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 presents a schematic diagram of the field curvature and distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordance with a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 presents the field curvature and distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a camera optical lens in accordance with a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown in FIG. 9;

FIG. 12 presents the field curvature and distortion of the camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of the present invention, the camera optical lens 10 comprises 7 lenses. Specifically, from the object side to the image side, the camera optical lens 10 comprises in sequence: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7. Optical element like optical filter GF can be arranged between the seventh lens L7 and the image surface Si. The first lens L1 is made of glass material, the second lens L2 is made of plastic material, the third lens L3 is made of glass material, the fourth lens L4 is made of plastic material, the fifth lens L5 is made of plastic material, the sixth lens L6 is made of plastic material, the seventh lens L7 is made of plastic material;

Here, the focal length of the whole camera optical lens is defined as f, the focal length of the first lens L1 is defined as f1, the focal length of the third lens L3 is defined as f3, the focal length of the fourth lens L4 is defined as f4, the refractive index of the first lens L1 is defined as n1, the refractive index of the third lens L3 is defined as n3, the curvature radius of the object side surface of the seventh lens L7 is defined as R13, the curvature radius of the image side surface of the seventh lens L7 is defined as R14, they satisfy the following conditions: 1

f1/f

1.5 1.7

n1

2.2, −2

f3/f4

2; 0.5

(R13+R14)/(R13−R14)

10; 1.7

n3

2.2.

Condition 1

f1/f

1.5 fixes the positive refractive power of the first lens L1. If the lower limit of the set value is exceeded, although it benefits the ultra-thin development of lenses, but the positive refractive power of the first lens L1 will be too strong, problem like aberration is difficult to be corrected, and it is also unfavorable for wide-angle development of lens. On the contrary, if the higher limit of the set value is exceeded, the positive refractive power of the first lens L1 becomes too weak, it is then difficult to develop ultra-thin lenses. Preferably, the following condition shall be satisfied, 1.10

f1/f

1.45.

Condition 1.7

n1

2.2 fixes the refractive power of the first lens L1, refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.72

n1

1.98.

Condition −2

f3/f4

2 fixes the ratio between the focal length f3 of the third lens L3 and the focal length f4 of the fourth lens L4, a ratio within this range can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the following condition shall be satisfied, −1.94

f3/f4

0.33.

Condition −10

(R13+R14)/(R13−R14)

10 fixes the shape of the seventh lens L7, when the value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −4.56

(R13+R14)/(R13−R14)

6.60.

Condition 1.7

n3

2.2 fixes the refractive index of the first lens L1, refractive index within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.74

n3

2.0

When the focal length of the camera optical lens 10 of the present invention, the focal length of each lens, the refractive index of the related lens, and the total optical length, the thickness on-axis and the curvature radius of the camera optical lens satisfy the above conditions, the camera optical lens 10 has the advantage of high performance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has positive refractive power; the focal length of the whole camera optical lens is f, the focal length of the first lens L1 is f1, the curvature radius of the object side surface of the first lens L1 is R1, the curvature radius of the image side surface of the first lens L1 is R2 and the thickness on-axis of the first lens L1 is d1, they satisfy the following condition: −6.23

(R1+R2)/(R1−R2)

−1.69, this condition reasonably controls the shape of the first lens, then the first lens can effectively correct the spherical aberration of the system; if the condition 0.30

d1

0.94 is satisfied it is beneficial for the realization of ultra-thin lens. Preferably, the following condition shall be satisfied, −3.90

(R1+R2)/(R1−R2)

−2.11; 0.49

d1

0.75.

In this embodiment, the object side surface of the second lens L2 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the second lens L2 is f2, the curvature radius of the object side surface of the second lens L2 is R3, the curvature radius of image side surface of the second lens L2 is R4 and the thickness on-axis of the second lens L2 is d3, they satisfy the following condition: when the condition −21.65

f2/f

−3.36 is satisfied, the negative refractive power of the second lens L2 is controlled within reasonable scope, the spherical aberration caused by the first lens L1 which has positive refractive power and the field curvature of the system then can be reasonably and effectively balanced; the condition 3.35

(R3+R4)/(R3−R4)

19.28 fixes the shape of the second lens L2, when value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like on-axis chromatic aberration is difficult to be corrected; if the condition 0.13

d3

0.50 is satisfied, it is beneficial for the realization of ultra-thin lenses. Preferably, the following conditions shall be satisfied, −13.53

f2/f

−4.20; 5.37

(R3+R4)/(R3−R4)

15.42; 0.20

d3

0.40.

In this embodiment, the object side surface of the third lens L3 is a concave surface relative to the proximal axis, its image side surface is a convex surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the third lens L3 is f3, the curvature radius of the object side surface of the third lens L3 is R5, the curvature radius of the image side surface of the third lens L3 is R6 and the thickness on-axis of the third lens L3 is d5, they satisfy the condition: −11.39

f3/f

−2.90, by meeting this condition, it is helpful for the system to obtain good ability in balancing the field curvature, so that the image quality can be effectively improved; by meeting the condition −12.01

(R5+R6)/(R5−R6)

−3.25 the shape of the third lens L3 can be effectively controlled, it is beneficial for the shaping of the third lens L3 and bad shaping and stress generation due to extra large curvature of surface of the third lens L3 can be avoided; when the condition 0.10

d5

0.32 is satisfied, it is beneficial for the realization of ultra-thin lenses. Preferably, the following conditions shall be satisfied, −7.12

f3/f

−3.63; −7.51

(R5+R6)/(R5−R6)

−4.06; 0.17

d5

0.26.

In this embodiment, the object side surface of the fourth lens L4 is a convex surface relative to the proximal axis, its image side surface is a convex surface relative to the proximal axis, and it has positive refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the fourth lens L4 is f4, the curvature radius of the object side surface of the fourth lens L4 is R7, the curvature radius of the image side surface of the fourth lens L4 is R8 and the thickness on-axis of the fourth lens L4 is d7, they satisfy the condition: 1.51

f4/f

4.87, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; the condition −0.73

(R7+R8)/(R7−R8)

−0.20 fixes the shape of the fourth lens L4, when beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like chromatic aberration is difficult to be corrected; when the condition 0.26

d7

0.80 is satisfied, it is beneficial for realization of ultra-thin lenses. Preferably, the following conditions shall be satisfied, 2.42

f4/f

3.89; −0.46

(R7+R8)/(R7−R8)

−0.25; 0.42

d7

0.64.

In this embodiment, the object side surface of the fifth lens L5 is a concave surface relative to the proximal axis, its image side surface is a convex surface relative to the proximal axis, and it has positive refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the fifth lens L5 is f5, the curvature radius of the object side surface of the fifth lens L5 is R9, the curvature radius of the image side surface of the fifth lens L5 is R10 and the thickness on-axis of the fifth lens L5 is d9, they satisfy the condition: 0.31

f5/f

0.95, the limitation on the fifth lens L5 can effectively make the light angle of the camera lens flat and the tolerance sensitivity reduces; the condition 0.53

(R9+R10)/(R9−R10)

1.67 fixes the shape of the fifth lens L5, when beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like off-axis chromatic aberration is difficult to be corrected; when the condition 0.40

d9

1.34 is satisfied, it is beneficial for the realization of ultra-thin lens. Preferably, the following conditions shall be satisfied, 0.50

f5/f

0.76, 0.85

(R9+R10)/(R9−R10)

1.33; 0.64

d9

1.08.

In this embodiment, the object side surface of the sixth lens L6 is a concave surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6, the curvature radius of the object side surface of the sixth lens L6 is R11, the curvature radius of the image side surface of the sixth lens L6 is R12 and the thickness on-axis of the sixth lens L6 is d11, they satisfy the condition: −5.46

f6/f

−1.59, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; the condition −1.86

(R11+R12)/(R11−R12)

−0.48 fixes the shape of the sixth lens L6, when beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, the problem like off-axis chromatic aberration is difficult to be corrected; when the condition 0.17

d11

0.53, is satisfied, it is beneficial for the realization of ultra-thin lens. Preferably, the following conditions shall be satisfied, −3.41

f6/f

−1.99; −1.16

(R11+R12)/(R11−R12)

−0.60; 0.27

d11

0.42.

In this embodiment, the object side surface of the seventh lens L7 is a concave surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the seventh lens L7 is f7 and the thickness on-axis of the seventh lens L7 is d13, they satisfy the condition −1.38

f7/f

−0.45, appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; when the condition 0.15

d13

0.47 is satisfied, it is beneficial for the realization of ultra-thin lens. Preferably, the following conditions shall be satisfied, −0.86

f7/f

0.24

d13

0.37.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.12 mm, it is beneficial for the realization of ultra-thin lenses. Preferably, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.85.

In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 2.36. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 2.31.

With such design, the total optical length TTL of the whole camera optical lens 10 can be made as short as possible, thus the miniaturization characteristics can be maintained.

In the following, an example will be used to describe the camera optical lens 10 of the present invention. The symbols recorded in each example are as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surface to the image surface of the first lens L1).

Preferably, inflexion points and/or arrest points can also be arranged on the object side surface and/or image side surface of the lens, so that the demand for high quality imaging can be satisfied, the description below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the following, the unit of the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd νd S1 ∞  d0 = −0.274 R1 2.263  d1 = 0.625 nd1 1.7464 ν1 55.29 R2 5.224  d2 = 0.070 R3 4.303  d3 = 0.253 nd2 1.6510 ν2 21.51 R4 3.187  d4 = 0.461 R5 −4.919  d5 = 0.215 nd3 1.7726 ν3 21.72 R6 −6.884  d6 = 0.041 R7 9.967  d7 = 0.528 nd4 1.5441 ν4 56.12 R8 −20.224  d8 = 0.370 R9 −25.057  d9 = 0.896 nd5 1.5352 ν5 56.12 R10 −1.334 d10 = 0.033 R11 −6.459 d11 = 0.339 nd6 1.5855 ν6 29.91 R12 51.730 d12 = 0.392 R13 −6.332 d13 = 0.308 nd7 1.5352 ν7 56.12 R14 1.946 d14 = 0.500 R15 ∞ d15 = 0.210 ndg 1.5168 νg 64.17 R16 ∞ d16 = 0.246

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvature radius in case of lens;

R1: The curvature radius of the object side surface of the first lens L1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lens L2;

R4: The curvature radius of the image side surface of the second lens L2;

R5: The curvature radius of the object side surface of the third lens L3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lens L4;

R8: The curvature radius of the image side surface of the fourth lens L4;

R9: The curvature radius of the object side surface of the fifth lens L5;

R10: The curvature radius of the image side surface of the fifth lens L5;

R11: The curvature radius of the object side surface of the sixth lens L6;

R12: The curvature radius of the image side surface of the sixth lens L6;

R13: The curvature radius of the object side surface of the seventh lens L7;

R14: The curvature radius of the image side surface of the seventh lens L7;

R15: The curvature radius of the object side surface of the optical filter GF;

R16: The curvature radius of the image side surface of the optical filter GF;

d: The thickness on-axis of the lens and the distance on-axis between the lens;

d0: The distance on-axis from aperture S1 to the object side surface of the first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lens L1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lens L2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lens L6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventh lens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the image surface of the optical filter GF;

nd: The refractive index of the d line;

nd1: The refractive index of the d line of the first lens L1;

nd2: The refractive index of the d line of the second lens L2;

nd3: The refractive index of the d line of the third lens L3;

nd4: The refractive index of the d line of the fourth lens L4;

nd5: The refractive index of the d line of the fifth lens L5;

nd6: The refractive index of the d line of the sixth lens L6;

nd7: The refractive index of the d line of the seventh lens L7;

ndg: The refractive index of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF;

Table 2 shows the aspherical surface data of the camera optical lens 10 in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16 R1 −3.2889E−01 6.2454E−03 5.2381E−03 −1.5780E−03 7.2636E−04 5.7473E−04 −9.6262E−05 −4.2983E−06 R2 −5.7752E+01 6.9856E−03 −3.8395E−03 3.1158E−03 1.4144E−03 −1.1628E−03 3.2552E−04 4.0859E−04 R3 −3.1035E+01 −2.6165E−02 1.2540E−04 5.5366E−03 −2.8986E−03 2.1657E−03 5.4932E−04 −4.0283E−04 R4 −4.5073E+00 −7.3144E−03 −1.0400E−02 −2.9337E−04 −3.8800E−03 −2.4155E−03 −1.9251E−03 −2.3805E−04 R5 1.5256E+01 −2.0318E−02 −4.7213E−02 −2.6261E−02 2.7090E−03 4.1555E−03 −6.1994E−03 9.3860E−03 R6 2.7705E+01 −1.6404E−02 −3.8151E−02 −1.0721E−03 7.2121E−03 4.9236E−03 1.9907E−03 −6.3659E−04 R7 1.8788E+01 −5.5310E−02 1.3436E−02 3.4444E−03 7.3472E−05 −1.7111E−05 7.8397E−05 −7.9649E−06 R8 9.6656E+01 −6.6246E−02 3.3429E−03 8.2234E−04 −1.0199E−03 −3.3566E−04 1.9091E−04 2.2444E−04 R9 −1.0000E+02 −3.8586E−02 6.5210E−04 −4.8259E−05 −1.3747E−03 2.4660E−05 7.2587E−05 2.3079E−06 R10 −3.6579E+00 −3.8632E−02 1.7839E−02 −8.9130E−04 −4.2025E−04 −2.8141E−05 1.0115E−05 −8.5028E−07 R11 3.0671E+00 −1.7899E−02 1.0436E−03 5.2090E−04 −1.2829E−05 −4.4313E−05 −1.4079E−06 1.1797E−06 R12 −1.0000E+02 −6.7909E−03 −8.8157E−05 6.1860E−05 8.7837E−06 −9.6270E−07 −1.9407E−07 2.2628E−08 R13 1.4472E+00 −3.9584E−03 2.1521E−03 1.8363E−05 −1.3840E−05 −7.1761E−07 1.3466E−08 7.0568E−09 R14 −1.0158E+01 −2.5093E−02 3.9035E−03 −5.1647E−04 2.0524E−05 1.3945E−06 3.8667E−08 −1.4378E−08

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 are aspheric surface indexes.

IH: Image height y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰ +A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses the aspheric surfaces shown in the above condition (1). However, the present invention is not limited to the aspherical polynomials form shown in the condition (1).

Table 3 and table 4 show the inflexion points and the arrest point design data of the camera optical lens 10 lens in embodiment 1 of the present invention. In which, R1 and R2 represent respectively the object side surface and image side surface of the first lens L1, R3 and R4 represent respectively the object side surface and image side surface of the second lens L2, R5 and R6 represent respectively the object side surface and image side surface of the third lens L3, R7 and R8 represent respectively the object side surface and image side surface of the fourth lens L4, R9 and R10 represent respectively the object side surface and image side surface of the fifth lens L5, R11 and R12 represent respectively the object side surface and image side surface of the sixth lens L6, R13 and R14 represent respectively the object side surface and image side surface of the seventh lens L7. The data in the column named “inflexion point position” are the vertical distances from the inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” are the vertical distances from the arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Inflexion point Inflexion point Inflexion point Inflexion point number position 1 position 2 position 3 R1 R2 R3 2 0.635 0.945 R4 1 0.765 R5 R6 1 1.065 R7 2 0.435 0.945 R8 1 1.265 R9 R10 2 1.215 1.515 R11 R12 2 0.485 2.355 R13 3 1.505 2.595 2.905 R14 1 0.765

TABLE 4 Arrest Arrest point number Arrest point position 1 point position 2 R1 R2 R3 R4 1 1.045 R5 R6 R7 2 0.865 0.995 R8 R9 R10 R11 R12 1 0.835 R13 2 2.495 2.685 R14 1 1.725

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 436 nm, 486 nm, 546 nm, 588 nm and 656 nm passes the camera optical lens 10 in the first embodiment. FIG. 4 shows the field curvature and distortion schematic diagrams after light with a wavelength of 546.1 nm passes the camera optical lens 10 in the first embodiment, the field curvature S in FIG. 4 is a field curvature in the sagittal direction, T is a field curvature in the meridian direction.

Table 13 shows the various values of the embodiments 1, 2, 3 and the values corresponding with the parameters which are already specified in the condition expressions.

As shown in Table 13, the first embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.287 mm, the full vision field image height is 3.475 mm, the vision field angle in the diagonal direction is 80.00°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 5 and table 6 show the design data of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 5 R d nd νd S1 ∞  d0 = −0.266 R1 2.304  d1 = 0.623 nd1 1.7470 ν1 55.37 R2 4.857  d2 = 0.069 R3 4.065  d3 = 0.285 nd2 1.6510 ν2 21.51 R4 3.265  d4 = 0.460 R5 −4.849  d5 = 0.210 nd3 1.7976 ν3 22.68 R6 −6.946  d6 = 0.037 R7 10.023  d7 = 0.528 nd4 1.5441 ν4 56.12 R8 −21.605  d8 = 0.378 R9 −33.852  d9 = 0.860 nd5 1.5352 ν5 56.12 R10 −1.338 d10 = 0.040 R11 −6.737 d11 = 0.342 nd6 1.5855 ν6 29.91 R12 41.560 d12 = 0.408 R13 −6.358 d13 = 0.311 nd7 1.5352 ν7 56.12 R14 1.992 d14 = 0.500 R15 ∞ d15 = 0.210 ndg 1.5168 νg 64.17 R16 ∞ d16 = 0.257

Table 6 shows the aspherical surface data of each lens of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16 R1 −3.4756E−01 5.9770E−03 5.0129E−03 −1.5523E−03 7.4733E−04 5.5604E−04 −1.2283E−04 −3.5839E−06 R2 −5.6681E+01 7.0091E−03 −4.1679E−03 2.9714E−03 1.4619E−03 −1.0514E−03 3.8858E−04 3.3604E−04 R3 −3.1825E+01 −2.6040E−02 4.3810E−04 5.4784E−03 −2.9038E−03 2.1631E−03 5.8110E−04 −3.3277E−04 R4 −4.7993E+00 −8.0153E−03 −1.0782E−02 −2.7367E−04 −3.5337E−03 −1.9397E−03 −1.6238E−03 −2.9614E−04 R5 1.5231E+01 −2.1352E−02 −4.6700E−02 −2.5889E−02 2.7269E−03 4.0399E−03 −6.2367E−03 9.6607E−03 R6 2.8022E+01 −1.6334E−02 −3.8672E−02 −1.3736E−03 7.0403E−03 4.7815E−03 1.8764E−03 −7.4854E−04 R7 1.8137E+01 −5.5474E−02 1.3385E−02 3.3996E−03 5.5316E−05 −2.0056E−05 7.9601E−05 −5.5123E−06 R8 1.0001E+02 −6.6638E−02 3.2764E−03 8.2110E−04 −1.0262E−03 −3.4201E−04 1.8754E−04 2.2177E−04 R9 −9.9813E+01 −3.7189E−02 9.9928E−04 −4.5182E−05 −1.3781E−03 2.4379E−05 6.9682E−05 1.9075E−06 R10 −3.5491E+00 −3.9787E−02 1.7747E−02 −9.2347E−04 −4.2460E−04 −2.8175E−05 1.0146E−05 −8.7590E−07 R11 2.8532E+00 −1.7974E−02 8.2291E−04 5.1536E−04 −1.5331E−05 −4.3646E−05 −1.0985E−06 1.2004E−06 R12 3.4524E+01 −6.7916E−03 −9.9331E−05 6.1281E−05 8.6937E−06 −9.7472E−07 −1.9539E−07 2.2370E−08 R13 1.3832E+00 −3.9051E−03 2.1603E−03 1.6283E−05 −1.3833E−05 −7.3331E−07 1.3796E−08 7.1689E−09 R14 −9.9321E+00 −2.5208E−02 3.9608E−03 −5.1545E−04 2.0140E−05 1.3711E−06 3.9084E−08 −1.3941E−08

Table 7 and table 8 show the inflexion points and the arrest point design data of the camera optical lens 20 lens in the second embodiment of the present invention.

TABLE 7 Inflexion Inflexion point number Inflexion point position 1 point position 2 R1 R2 R3 2 0.635 0.935 R4 1 0.765 R5 R6 1 1.075 R7 2 0.425 0.945 R8 1 1.275 R9 R10 2 1.275 1.455 R11 R12 2 0.545 2.415 R13 2 1.505 2.585 R14 1 0.775

TABLE 8 Arrest Arrest point number Arrest point position 1 point position 2 R1 R2 R3 R4 1 1.055 R5 R6 R7 2 0.845 1.025 R8 R9 R10 R11 R12 1 0.945 R13 2 2.465 2.695 R14 1 1.735

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 436 nm, 486 nm, 546 nm, 588 nm and 656 nm passes the camera optical lens 20 in the second embodiment. FIG. 8 shows the field curvature and distortion schematic diagrams after light with a wavelength of 546.1 nm passes the camera optical lens 20 in the second embodiment.

As shown in Table 13, the second embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.287 mm, the full vision field image height is 3.475 mm, the vision field angle in the diagonal direction is 80.06°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

The design information of the camera optical lens 30 in the third embodiment of the present invention is shown in the tables 9 and 10.

TABLE 9 R d nd νd S1 ∞  d0 = −0.261 R1 2.341  d1 = 0.608 nd1 1.7525 ν1 50.71 R2 4.552  d2 = 0.053 R3 3.676  d3 = 0.333 nd2 1.6510 ν2 21.51 R4 3.146  d4 = 0.485 R5 −4.729  d5 = 0.210 nd3 1.8062 ν3 22.00 R6 −7.173  d6 = 0.037 R7 11.011  d7 = 0.533 nd4 1.5441 ν4 56.12 R8 −20.571  d8 = 0.405 R9 −48.476  d9 = 0.795 nd5 1.5352 ν5 56.12 R10 −1.342 d10 = 0.040 R11 −6.808 d11 = 0.350 nd6 1.5855 ν6 29.91 R12 185.009 d12 = 0.450 R13 −6.376 d13 = 0.299 nd7 1.5352 ν7 56.12 R14 2.013 d14 = 0.500 R15 ∞ d15 = 0.210 ndg 1.5168 νg 64.17 R16 ∞ d16 = 0.259

Table 10 shows the aspherical surface data of each lens of the camera optical lens 30 in embodiment 3 of the present invention.

TABLE 10 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16 R1 −3.4604E−01 5.9971E−03 5.0618E−03 −1.3722E−03 6.6564E−04 3.0978E−04 −3.0181E−04 5.0848E−05 R2 −6.3705E+01 4.2665E−03 −6.3200E−03 1.8033E−03 1.0944E−03 −1.0727E−03 3.6286E−04 2.0211E−04 R3 −3.3720E+01 −2.7296E−02 −8.8211E−04 4.6497E−03 −3.1624E−03 2.5732E−03 1.1451E−03 −2.5775E−04 R4 −4.8223E+00 −7.5252E−03 −8.9913E−03 1.4179E−03 −2.5262E−03 −1.2421E−03 −7.7141E−04 8.8357E−04 R5 1.5114E+01 −2.4855E−02 −4.5949E−02 −2.5360E−02 3.1012E−03 3.9008E−03 −6.7320E−03 9.7622E−03 R6 2.8314E+01 −1.5301E−02 −3.9611E−02 −1.4482E−03 6.8787E−03 4.3857E−03 1.3925E−03 −1.1806E−03 R7 2.1387E+01 −5.4583E−02 1.3264E−02 2.9462E−03 −7.5525E−05 −8.7942E−06 9.6939E−05 −7.3568E−06 R8 1.0001E+02 −6.8847E−02 3.0055E−03 1.0166E−03 −9.2709E−04 −3.2822E−04 1.6740E−04 1.9969E−04 R9 −1.0004E+02 −3.5067E−02 1.4023E−03 4.8509E−05 −1.2720E−03 5.4086E−05 6.9831E−05 −3.8088E−06 R10 −3.4185E+00 −4.1084E−02 1.7731E−02 −9.7983E−04 −4.2731E−04 −2.1680E−05 1.2544E−05 −8.8554E−07 R11 2.2533E+00 −1.6323E−02 7.2944E−04 4.7318E−04 −1.6827E−05 −4.2137E−05 −2.9696E−07 1.4962E−06 R12 −1.0001E+02 −7.1921E−03 −7.7663E−05 5.8966E−05 8.3234E−06 −9.1777E−07 −1.6832E−07 2.7162E−08 R13 1.8016E+00 −5.1146E−03 2.1781E−03 2.5596E−05 −1.3687E−05 −7.7456E−07 5.7739E−09 7.0027E−09 R14 −9.5006E+00 −2.4795E−02 4.0368E−03 −5.2403E−04 2.0106E−05 1.3561E−06 3.4530E−08 −1.4284E−08

Table 11 and table 12 show the inflexion points and the arrest point design data of the camera optical lens 30 lens in embodiment 3 of the present invention.

TABLE 11 Inflexion Inflexion point number Inflexion point position 1 point position 2 R1 R2 R3 2 0.595 0.945 R4 1 0.825 R5 R6 R7 2 0.405 0.975 R8 1 1.285 R9 R10 2 1.335 1.445 R11 1 1.955 R12 2 0.255 2.195 R13 2 1.565 2.495 R14 1 0.785

TABLE 12 Arrest Arrest point number Arrest point position 1 point position 2 R1 R2 R3 R4 R5 R6 R7 2 0.765 1.105 R8 R9 R10 R11 R12 1 0.435 R13 R14 1 1.785

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 436 nm, 486 nm, 546 nm, 588 nm and 656 nm passes the camera optical lens 30 in the third embodiment. FIG. 12 shows the field curvature and distortion schematic diagrams after light with a wavelength of 546.1 nm passes the camera optical lens 30 in the third embodiment.

The following table 13, in accordance with the above condition expressions, lists the values in this embodiment corresponding with each condition. Apparently, the camera optical system of this embodiment satisfies the above conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.287 mm, the full vision field image height is 3.475 mm, the vision field angle in the diagonal direction is 80.06°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

TABLE 13 Embodiment Embodiment Embodiment 1 2 3 f 4.071 4.070 4.070 f1 4.884 5.288 5.697 f2 −20.515 −29.352 −44.065 f3 −23.180 −20.863 −17.716 f4 12.295 12.605 13.205 f5 2.587 2.569 2.553 f6 −9.709 −9.798 −11.120 f7 −2.734 −2.786 −2.812 f3/f4 −1.885 −1.655 −1.342 (R1 + R2)/(R1 − R2) −2.528 −2.804 −3.116 (R3 + R4)/(R3 − R4) 6.710 9.162 12.853 (R5 + R6)/(R5 − R6) −6.007 −5.625 −4.870 (R7 + R8)/(R7 − R8) −0.340 −0.366 −0.303 (R9 + R10)/(R9 − R10) 1.112 1.082 1.057 (R11 + R12)/(R11 − R12) −0.778 −0.721 −0.929 (R13 + R14)/(R13 − R14) 0.530 0.523 0.520 f1/f 1.200 1.299 1.400 f2/f −5.039 −7.211 −10.826 f3/f −5.693 −5.126 −4.352 f4/f 3.020 3.097 3.244 f5/f 0.636 0.631 0.627 f6/f −2.385 −2.407 −2.732 f7/f −0.672 −0.685 −0.691 d1 0.625 0.623 0.608 d3 0.253 0.285 0.333 d5 0.215 0.210 0.210 d7 0.528 0.528 0.533 d9 0.896 0.860 0.795 d11 0.339 0.342 0.350 d13 0.308 0.311 0.299 Fno 2.287 1.780 1.780 TTL 5.486 5.519 5.567 d7/TTL 0.096 0.096 0.096 n1 1.7464 1.7470 1.7525 n2 1.6510 1.6510 1.6510 n3 1.7726 1.7976 1.8062 n4 1.5441 1.5441 1.5441 n5 1.5352 1.5352 1.5352 n6 1.5855 1.5855 1.5855 n7 1.5352 1.5352 1.5352

It is to be understood, however, that even though numerous characteristics and advantages of the present exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms where the appended claims are expressed. 

What is claimed is:
 1. A camera optical lens comprising, from an object side to an image side in sequence: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens; the camera optical lens further satisfies the following conditions: 1

f1/f

1.5; 1.7

n1

2.2; −2

f3/f4

2; 0.5

(R13+R14)/(R13−R14)

10; 1.7

n3

2.2; where f: the focal length of the camera optical lens; f1: the focal length of the first lens; f3: the focal length of the third lens; f4: the focal length of the fourth lens; n1: the refractive index of the first lens; n3: the refractive index of the third lens; R13: curvature radius of object side surface of the seventh lens; R14: the curvature radius of image side surface of the seventh lens.
 2. The camera optical lens as described in claim 1, wherein the first lens is made of glass material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of glass material, the sixth lens is made of plastic material, the seventh lens is made of plastic material.
 3. The camera optical lens as described in claim 1, wherein first lens has a positive refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: −6.23

(R1+R2)/(R1−R2)

−1.69; 0.33

d1

0.98; where R1: the curvature radius of the object side surface of the first lens; R2: the curvature radius of the image side surface of the first lens; d1: the thickness on-axis of the first lens.
 4. The camera optical lens as described in claim 1, wherein the second lens has a negative refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: −21.65

f2/f

−3.36; 3.35

(R3+R4)/(R3−R4)

19.28; 0.13

d3

0.50; where f: the focal length of the camera optical lens; f2: the focal length of the second lens; R3: the curvature radius of the object side surface of the second lens; R4: the curvature radius of the image side surface of the second lens; d3: the thickness on-axis of the second lens.
 5. The camera optical lens as described in claim 1, wherein the third lens has a negative refractive power with a concave object side surface and a convex image side surface; wherein the camera optical lens further satisfies the following conditions: −11.39

f3/f

−2.90; −12.01

(R5+R6)/(R5−R6)

−3.25; 0.10

d5

0.32; where f: the focal length of the camera optical lens; f3: the focal length of the third lens; R5: the curvature radius of the object side surface of the third lens; R6: the curvature radius of the image side surface of the third lens; d5: the thickness on-axis of the third lens.
 6. The camera optical lens as described in claim 1, wherein the fourth lens has a positive refractive power with a convex object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: 1.51

f4/f

4.87; −0.73

(R7+R8)/(R7−R8)

−0.20; 0.26

d7

0.80; where f: the focal length of the camera optical lens; f4: the focal length of the fourth lens; R7: the curvature radius of the object side surface of the fourth lens; R8: the curvature radius of the image side surface of the fourth lens; d7: the thickness on-axis of the fourth lens.
 7. The camera optical lens as described in claim 1, wherein the fifth lens has a positive refractive power with a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: 0.31

f5/f

0.95; 0.53

(R9+R10)/(R9−R10)

1.67; 0.40

d9

1.34; where f: the focal length of the camera optical lens; f5: the focal length of the fifth lens; R9: the curvature radius of the object side surface of the fifth lens; R10: the curvature radius of the image side surface of the fifth lens; d9: the thickness on-axis of the fifth lens.
 8. The camera optical lens as described in claim 1, wherein the sixth lens has a negative refractive power with a concave object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: −5.46

f6/f

−1.59; −1.86

(R11+R12)/(R11−R12)

−0.48; 0.17

d11

0.53; where f: the focal length of the camera optical lens; f6: the focal length of the sixth lens; R11: the curvature radius of the object side surface of the sixth lens; R12: the curvature radius of the image side surface of the sixth lens; d11: the thickness on-axis of the sixth lens.
 9. The camera optical lens as described in claim 1, wherein the seventh lens has a negative refractive power with a concave object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: −1.38

f7/f

−0.45; 0.15

d13

0.47; where f: the focal length of the camera optical lens; f7: the focal length of the seventh lens; d13: the thickness on-axis of the seventh lens.
 10. The camera optical lens as described in claim 1, wherein the total optical length TTL of the camera optical lens is less than or equal to 6.12 mm.
 11. The camera optical lens as described in claim 1, wherein the aperture F number of the camera optical lens is less than or equal to 2.36. 